Nourani1, A. Bencheikh2   1Scientific and Technical Research Center on Arid Regions (CRSTRA), University Campus Mohamed Khider, Biskra, Algeria 2Science of Nature and Life Department of SNV, The African University Ahmed Draia, Adrar, Algeria   (Manuscript received 5 June 201

N. Valchev1*, G. Pevicharova2 1Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Vegetable Crops Research Institute Maritsa, 32 Brezovsko shose, 4003 Plovdiv, Bulgaria Abstract. The morphological and reproductive manifestations as